The Maryland Steam Historical Society Show (Baltimore County / Carroll County) A group of farmers and collectors gather at the Arcadia Show Grounds in Upperco, MD for the Maryland Steam Historical Society’s 64th annual show. Here, farm equipment from yesteryear is brought back to life with live demonstrations of threshing grain and sawing logs the oldfashioned way. We learn about the history of Maryland agriculture, and see how young and old are working to preserve it.